Rock 366 : Day 32 : Sheared Burrows

Day 32 : This is the ‘pipe rock’ or more formally the Pipe Rock Member of the Lower Cambrian age Eriboll Formation. It is a quartz arenite with characteristic skolithos burrows. This sample comes from the western slopes of Cnoc Charornaidh, southeast of Loch Borralan, just beneath the Moine Thrust. As a consequence the burrows, originally perpendicular to bedding, have been sheared, now being almost parallel to it. Keele Collection.